ancient indian architecture. pavilion in the courtyard of the red fort

architecture arch column palace landmark building temple estate history ancient indian pavilion courtyard red fort columns carved arches protective wall perimeter india agra carving stone pillars audience divan diwan- -am architecture blue sky pavilion pillar colonnade heritage india unesco world heritage pattern fort carved diwan- -khas indian courtyard columns column carvings royal arches paved red perimeter lawn islam walls unesco famous protection agra islamic wall palace historical historic arch landmark old travel ancient